CN106186548A - A kind of marine culture wastewater processing system and processing method - Google Patents
A kind of marine culture wastewater processing system and processing method Download PDFInfo
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- CN106186548A CN106186548A CN201610711536.3A CN201610711536A CN106186548A CN 106186548 A CN106186548 A CN 106186548A CN 201610711536 A CN201610711536 A CN 201610711536A CN 106186548 A CN106186548 A CN 106186548A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
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Abstract
The present invention relates to a kind of marine culture wastewater processing system and processing method.Marine culture wastewater processing system includes inclined-plate clarifying basin and the syllogic denitrogenation dephosphorizing pond being connected, syllogic denitrogenation dephosphorizing pond includes the water distributing area that order is arranged, anoxia section, aerobic section, dephosphorization section and gathering ground, anoxia section fills gravel substrate, aerobic section fills zeolite matrix, and boring aeration pipe is set, dephosphorization section fills phosphorus removal functional filler matrix, inclined-plate clarifying basin bottom arranges inlet pipeline, inclined-plate clarifying basin top is connected with water distributing area, gathering ground arranges outlet pipeline, reflux pipe is set between gathering ground and water distributing area, after making part process, water is transmitted back to water distributing area by reflux pipe.Compared with prior art, the present invention can reduce turbidity in water body, dissolubility COD and nitrogen and phosphorus content simultaneously, creatively A/O Biological Contact Oxidation Process is combined with adsorption and dephosphorization technology and be applied to Seawater Treatment field, it is adaptable to the problem solving large-scale farming purification of waste water discharge.
Description
Technical field
The invention belongs to marine culture wastewater process field, especially relate to a kind of marine culture wastewater processing system and place
Reason method.
Background technology
According to " China Fisheries statistical yearbook 2014 ", China's fishery in 2014 suffers contaminated cultured area to reach 29607 hectares,
Aquatic products are caused to lose 9.9 ten thousand tons, about 13.2 hundred million yuan；The cultured area suffering disease reaches 151639 hectares, causes aquatic products to damage
Lose 25.2 ten thousand tons, about 40.7 hundred million yuan.Wherein fishery disease part is to be caused by self-pollution.As can be seen here, support at sea water Aquatic product
Growing field, the sewage quantity that need to process every year is the hugest.
Comparing with industrial wastewater with sanitary sewage, the major pollutants of marine culture wastewater are nutritive salt (nitrogen and phosphorus), and
Concentration is relatively low, there is a certain amount of suspended solid and dissolved organic matter simultaneously, affects water transparency.Cut down in waste water
Nitrogen and phosphorus content, could fundamentally solve corresponding by receiving the eutrophication problem in marine site, therefore this type of contains supporting of nutritive salt
Grow waste water urgently to process.
In research and the application aspect of marine culture wastewater process, domestic and international existing research has been achieved with tentatively being in progress,
But much achievement in research is more difficult is applied in Practical Project.Such as, membrane filtration technique is mainly used in some micron particles
Separation and concentration, relatively costly yet with this technological investment, therefore membrane filtration technique is used for circulating water culture system
Waste water processes, and is worth higher aquatic products in particular for culturing economic and produces the process of waste water；Ozone treatment technology and ultraviolet
Although radiosterilization technology etc. is obtained in that preferable treatment effect, but operating cost is higher and treatment effeciency is relatively low, serious shadow
Ring the application of both technology.Therefore, to multiple process Fuzzy Optimization, high purification should be set up in conjunction with practical situation
, the marine culture wastewater processing system being suitable for China's actual conditions, be beneficial to be reduced or avoided the discharge of breeding wastewater, reduce environment
Pollute.
A/O Biological Contact Oxidation Process is widely used to the process of domestic sewage denitrifying, and common bio-aeration filter
Pool process is compared, and this technique can realize the complete procedure of nitration denitrification, not only reduces ammonia nitrogen concentration, also can suppress nitrate nitrogen
Accumulation.But the case processing marine culture wastewater with it is also little, and the salinity being on the one hand because water body higher is unfavorable for nitre
Change the cultivation domestication of bacterium and denitrifying bacterium, be on the other hand because concentration of nitrogen and phosphorus relatively low in waste water and cause nitric efficiency the highest.
The most how to strengthen A/O Biological Contact Oxidation Process denitrification effect and be combined with dephosphorization process, becoming marine culture wastewater and process
Emphasis and difficult point.
Summary of the invention
Present invention aims to the water quality characteristics of marine culture wastewater, it is provided that a kind of marine culture wastewater processes system
System and processing method, inclined-plate clarifying basin, A/O bio-contact oxidation are combined by the present invention with adsorption and dephosphorization, it is achieved effectively denitrogenation
While dephosphorization, moreover it is possible to significantly reduce delivery turbidity.
Specifically, the present invention removes the suspended solid in marine culture wastewater by building inclined-plate clarifying basin, passes through structure
Build gravel matrix areas, zeolite matrix region and phosphorus removal functional filler matrix region, and effluent recycling system level processes useless
Present in water, ammonia nitrogen, phosphate and degradable dissolved organic matter, improve and water clarity, it is thus achieved that good water outlet water
Matter.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of marine culture wastewater processing system, including the inclined-plate clarifying basin being connected and syllogic denitrogenation dephosphorizing pond, institute
The syllogic denitrogenation dephosphorizing pond stated includes the water distributing area, anoxia section (A section), aerobic section (O section), the dephosphorization section that sequentially arrange and catchments
District, described anoxia section is filled gravel substrate, described aerobic section filling zeolite matrix, and is arranged boring aeration pipe, described
Dephosphorization section fills phosphorus removal functional filler matrix, and described inclined-plate clarifying basin bottom arranges inlet pipeline, inclined-plate clarifying basin top with
Water distributing area is connected, and described gathering ground arranges outlet pipeline.
Further, arranging reflux pipe between described gathering ground and water distributing area, after making part process, water is by backflow
Pipeline transport goes back to water distributing area, arranges reflux pump on reflux pipe.
Described anoxia section (A section), aerobic section (O section), the volume ratio of dephosphorization section are 1:2:1.
The particle diameter of described gravel substrate is 3～5cm, and the particle diameter of described zeolite matrix is 5～8cm, institute
The particle diameter of the phosphorus removal functional filler matrix stated is 3～5cm.
It is attached with denitrifying bacterium in described gravel substrate, described zeolite matrix is attached with nitrobacteria.
Phosphorus removal functional filler is obtained by following methods: flyash, slag and cement are stirred by the ratio by weight 6:11:3
Mix mix homogeneously, molding in a mold after the mix homogeneously that adds water, the demoulding after 25 DEG C of maintenance 3d, then natural curing 10～15d, i.e.
Obtain phosphorus removal functional filler.This preparation method is simple, is suitable for the large-scale production and application of filler.Slag particle diameter is 1-2cm, powder
The calcium ferrum aluminum isoreactivity composition that coal ash contains has good solid phosphorus effect；Slag is that filler provides loose skeleton, it is ensured that
Mass transfer effect；Cement is in order to ensure enough comprcssive strength.
A kind of marine culture wastewater processing method, comprises the following steps:
(1) staying water is introduced into inclined-plate clarifying basin, and particle is efficiently removed, mainly particulate organic matter,
The remaining bait that produces including sea-farming, fish and shrimp Excreta etc.；
(2) the water body entrance syllogic denitrogenation dephosphorizing pond flowed out from inclined-plate clarifying basin:
(21) water body flowed out from inclined-plate clarifying basin is introduced into water distributing area；
(22) water distributing area water outlet enters anoxia section, and anoxia section apposition growth denitrifying bacterium in gravel substrate is with in former water
Organic substance be carbon source, with the nitrate in backflow for nitrogen source, be nitrogen by nitrate reduction in water body, it is achieved nitrate nitrogen
Synchronization with dissolved organic matter is removed；
(23) water outlet of anoxia section flows into aerobic section, carries out perforated pipe aerating regulation at aerobic section, builds aerobic ring for nitrobacteria
Border, first the zeolite matrix in this region adsorbs the ammonia nitrogen in water, and then apposition growth nitrobacteria on zeolite matrix will
Mineralized nitrogen is nitrate nitrogen, and nitrate nitrogen is desorbed from zeolite again, it is achieved being circulated throughout of absorption-Nitrification-desorbing
Journey, thus realize zeolite regeneration, it being allowed to remain higher adsorption capacity, zeolite is also because being enriched with ammonia nitrogen thus improve nitre
Change efficiency；
(24) aerobic section water outlet enters dephosphorization section, utilizes the phosphorus adsorption function of phosphorus removal functional filler matrix to reduce the phosphorus in water
Content, reduces water turbidity simultaneously further；
(25) dephosphorization section effluent recycling enters gathering ground, and part water body reenters water distributing area by reflux pipe, is scarce
Oxygen section denitrification provides nitrogen source.
Wherein, water body anoxia section, aerobic section, dephosphorization section the time of staying than for 1:2:1.
Wherein, it is 100% that dephosphorization section effluent recycling enters the reflux ratio of gathering ground.
The present invention utilizes zeolite to have the advantages that ammonia nitrogen absorption amount is high, as the matrix fill of aerobic section thus strengthen
Nitrification effect, and invest A/O bio-contact oxidation with the flyash of high calcium iron content for Material synthesis phosphorus removal functional filler matrix
After technique, the purpose of denitrogenation dephosphorizing simultaneously can be reached.
Compared with prior art, the present invention is directed to the feature of marine culture wastewater, construct a set of simple and feasible device,
Turbidity in water body, dissolubility COD and nitrogen and phosphorus content can be reduced, creatively by A/O Biological Contact Oxidation Process and absorption simultaneously
Dephosphorization technique combines and is applied to Seawater Treatment field.By reasonable selection filler matrix, it is possible to realize the regeneration of substrate and give up
The recycling of thing, with low cost, it is adaptable to the problem solving large-scale farming purification of waste water discharge.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of marine culture wastewater processing system of the present invention；
Fig. 2 is the planar structure schematic diagram of marine culture wastewater processing system of the present invention；
In figure, 1 it is inlet pipeline, 2 is inclined-plate clarifying basin, 3 is water distributing area, 4 is gravel substrate, 5 is zeolite matrix, 6 is
Boring aeration pipe, 7 be phosphorus removal functional filler matrix, 8 be gathering ground, 9 be outlet pipeline, 10 be reflux pump, 11 for reflux pipe；
Solid arrow show water (flow) direction.
Detailed description of the invention
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
A kind of marine culture wastewater processing system, as shown in Figure 1 and Figure 2, including the inclined-plate clarifying basin 2 being connected and three sections
Formula denitrogenation dephosphorizing pond, syllogic denitrogenation dephosphorizing pond includes the water distributing area 3, anoxia section (A section), the aerobic section (O section) that sequentially arrange, removes
Phosphorus section and gathering ground 8, anoxia section is filled gravel substrate 4, aerobic section filling zeolite matrix 5, and is arranged boring aeration pipe 6, dephosphorization
Section fills phosphorus removal functional filler matrix 7, and inclined-plate clarifying basin 2 bottom arranges inlet pipeline 1, inclined-plate clarifying basin 2 top and water distributing area 3
Being connected, gathering ground 8 arranges outlet pipeline 9.Reflux pipe 11 is set between gathering ground 8 and water distributing area 3, water after making part process
It is transmitted back to water distributing area 3 by reflux pipe 11, reflux pipe 11 arranges reflux pump 10.Anoxia section (A section), aerobic section (O
Section), the volume ratio of dephosphorization section be 1:2:1.
It is attached with denitrifying bacterium in gravel substrate, zeolite matrix is attached with nitrobacteria.
In the present embodiment, the particle diameter of gravel substrate is 3～5cm, and packed height is 1m；The particle diameter of zeolite matrix
Being 5～8cm, height is 1m；The particle diameter of phosphorus removal functional filler matrix is 3～5cm, and height is 1m.Zeolite region is arranged
The caliber of boring aeration pipe is DN20, and perforate on the aeration tube of bottom that is laid in, aperture is 4mm, and spacing is 150mm, runs
Journey keeps the dissolved oxygen in this region to be 3～5mg/l；It is 100% that reflux pump stably controls reflux ratio, and return duct caliber is
DN150。
Phosphorus removal functional filler is obtained by following methods: flyash, slag and cement are stirred by the ratio by weight 6:11:3
Mix mix homogeneously, molding in a mold after the mix homogeneously that adds water, the demoulding after 25 DEG C of maintenance 3d, then natural curing 10～15d, i.e.
Obtain phosphorus removal functional filler.This preparation method is simple, is suitable for the large-scale production and application of filler.Slag particle diameter is 1-2cm, powder
The calcium ferrum aluminum isoreactivity composition that coal ash contains has good solid phosphorus effect；Slag is that filler provides loose skeleton, it is ensured that
Mass transfer effect；Cement is in order to ensure enough comprcssive strength.
A kind of marine culture wastewater processing method, comprises the following steps:
(1) staying water is introduced into inclined-plate clarifying basin, and particle is efficiently removed, mainly particulate organic matter,
The remaining bait that produces including sea-farming, fish and shrimp Excreta etc.；
(2) the water body entrance syllogic denitrogenation dephosphorizing pond flowed out from inclined-plate clarifying basin:
(21) water body flowed out from inclined-plate clarifying basin is introduced into water distributing area；
(22) water distributing area water outlet enters anoxia section, and anoxia section apposition growth denitrifying bacterium in gravel substrate is with in former water
Organic substance be carbon source, with the nitrate in backflow for nitrogen source, be nitrogen by nitrate reduction in water body, it is achieved nitrate nitrogen
Synchronization with dissolved organic matter is removed；
(23) water outlet of anoxia section flows into aerobic section, carries out perforated pipe aerating regulation at aerobic section, builds aerobic ring for nitrobacteria
Border, first the zeolite matrix in this region adsorbs the ammonia nitrogen in water, and then apposition growth nitrobacteria on zeolite matrix will
Mineralized nitrogen is nitrate nitrogen, and nitrate nitrogen is desorbed from zeolite again, it is achieved being circulated throughout of absorption-Nitrification-desorbing
Journey, thus realize zeolite regeneration, it being allowed to remain higher adsorption capacity, zeolite is also because being enriched with ammonia nitrogen thus improve nitre
Change efficiency；
(24) aerobic section water outlet enters dephosphorization section, utilizes the phosphorus adsorption function of phosphorus removal functional filler matrix to reduce the phosphorus in water
Content, reduces water turbidity simultaneously further；
(25) dephosphorization section effluent recycling enters gathering ground, and part water body reenters water distributing area by reflux pipe, is scarce
Oxygen section denitrification provides nitrogen source.
Wherein, water body anoxia section, aerobic section, dephosphorization section time of staying ratio for 1:2:1, dephosphorization section effluent recycling enters
The reflux ratio of gathering ground is 100%.
Utilize above-mentioned marine culture wastewater processing method that the water outlet of certain sea-farming factory is processed, first build above-mentioned
Device processes sea-farming water outlet, and the process water yield is 500m3/ d, major pollutants are ammonia nitrogen, inorganic nitrogen, total phosphorus and COD.Measure
In water inlet, ammonia nitrogen is 0.5～2.1mg/l, and total phosphorus content is 0.3～0.5mg/l, and COD is 2.68～6.11mg/l.Syllogic takes off
The design hydraulic detention time in nitrogen dephosphorization pond is 8 hours, and the hydraulic detention time of each section is respectively 2 hours, 4 hours, 2 hours.
The planar dimension in syllogic denitrogenation dephosphorizing pond is 8.3m × 20m, and the degree of depth is 1m.
System reaches stable after building up operation one month, continuous service one-year age the most, breeding wastewater is after treatment
Water outlet suspended solid (increment) drops to 53～67mg/l, and COD drops to 0.65～1.51mg/l, ammonia-nitrogen content 0.10～
0.25mg/l, reactive phosphate content 0.05～0.22mg/l, inorganic nitrogen (increment) 0.13～0.40mg/l, it is satisfied by " Aquatic product
Breeding wastewater emission request " (DB33/453-2006).Building of system rises for the every pollutant cutting down marine culture wastewater
Arrive good result, and system run all right, the phenomenon that treatment effect drastically reduces has not occurred.
The above-mentioned description to embodiment is to be understood that for ease of those skilled in the art and use invention.
These embodiments obviously easily can be made various amendment by person skilled in the art, and described herein typically
Principle is applied in other embodiments without through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, ability
Field technique personnel should be the present invention's according to the announcement of the present invention, the improvement made without departing from scope and amendment
Within protection domain.
Claims (9)
1. a marine culture wastewater processing system, it is characterised in that include inclined-plate clarifying basin and the syllogic denitrogenation being connected
Dephosphorization pond, described syllogic denitrogenation dephosphorizing pond includes the water distributing area, anoxia section, aerobic section, the dephosphorization section that sequentially arrange and catchments
District,
Described anoxia section fills gravel substrate, and described aerobic section is filled zeolite matrix, and arranged boring aeration pipe, described
Dephosphorization section fills phosphorus removal functional filler matrix,
Described inclined-plate clarifying basin bottom arranges inlet pipeline, and inclined-plate clarifying basin top is connected with water distributing area, and described catchments
District arranges outlet pipeline.
A kind of marine culture wastewater processing system the most according to claim 1, it is characterised in that described gathering ground with join
Arranging reflux pipe between pool, after making part process, water is transmitted back to water distributing area by reflux pipe.
A kind of marine culture wastewater processing system the most according to claim 1, it is characterised in that described anoxia section, good
Oxygen section, the volume ratio of dephosphorization section are 1:2:1.
A kind of marine culture wastewater processing system the most according to claim 1, it is characterised in that described gravel substrate
Particle diameter is 3～5cm, and the particle diameter of described zeolite matrix is 5～8cm, described phosphorus removal functional filler matrix
Grain a diameter of 3～5cm.
A kind of marine culture wastewater processing system the most according to claim 1, it is characterised in that in described gravel substrate
It is attached with denitrifying bacterium, described zeolite matrix is attached with nitrobacteria.
A kind of marine culture wastewater processing system the most according to claim 1, it is characterised in that phosphorus removal functional filler by with
Lower method obtains: the ratio of 6:11:3 is by flyash, slag and cement mixing mix homogeneously by weight, after the mix homogeneously that adds water
Molding in a mold, obtains phosphorus removal functional filler.
7. marine culture wastewater processing method based on processing system according to any one of claim 1-6, it is characterised in that bag
Include following steps:
(1) staying water is introduced into inclined-plate clarifying basin, and particle is removed；
(2) the water body entrance syllogic denitrogenation dephosphorizing pond flowed out from inclined-plate clarifying basin:
(21) water body flowed out from inclined-plate clarifying basin is introduced into water distributing area；
(22) water distributing area water outlet enters anoxia section, and anoxia section apposition growth denitrifying bacterium in gravel substrate is with having in former water
Machine thing is carbon source, with the nitrate in backflow for nitrogen source, is nitrogen by nitrate reduction in water body, it is achieved nitrate nitrogen and molten
Solve organic synchronization of state to remove；
(23) water outlet of anoxia section flows into aerobic section, carries out perforated pipe aerating regulation at aerobic section, builds aerobic environment for nitrobacteria, this
First zeolite matrix in region adsorbs the ammonia nitrogen in water, and then ammonia nitrogen is turned by apposition growth nitrobacteria on zeolite matrix
Turning to nitrate nitrogen, nitrate nitrogen is desorbed from zeolite again, it is achieved the cyclic process of absorption-Nitrification-desorbing, thus
Realize zeolite regeneration；
(24) aerobic section water outlet enters dephosphorization section, and the phosphorus utilizing the phosphorus adsorption function of phosphorus removal functional filler matrix to reduce in water contains
Amount, reduces water turbidity simultaneously further；
(25) dephosphorization section effluent recycling enters gathering ground, and part water body reenters water distributing area by reflux pipe, for anoxia section
Denitrification provides nitrogen source.
Marine culture wastewater processing method the most according to claim 7, it is characterised in that water body anoxia section, aerobic section,
The time of staying of dephosphorization section is than for 1:2:1.
Marine culture wastewater processing method the most according to claim 7, it is characterised in that dephosphorization section effluent recycling enters collection
The reflux ratio in pool is 100%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110776206A (en) * | 2019-11-19 | 2020-02-11 | 江苏莲洋港环保科技有限公司 | Sewage treatment station and phosphorus and nitrogen removal method adopting sewage treatment station |
| CN111345192A (en) * | 2020-03-06 | 2020-06-30 | 浙江省海洋水产养殖研究所 | Ecological cycle system is bred to sea water shrimp intensification |
| CN112279378A (en) * | 2020-10-15 | 2021-01-29 | 苏州科技大学 | Biological treatment method and device for purifying aquaculture wastewater and circulating purification aquaculture device |
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| CN101407360A (en) * | 2008-08-23 | 2009-04-15 | 浙江海洋学院 | Method for processing waste water of circulating marine culture by using artificial wet land |
| CN201648099U (en) * | 2010-02-01 | 2010-11-24 | 河海大学 | Novel constructed wetland packing module |
| CN104591397A (en) * | 2015-02-09 | 2015-05-06 | 上海交通大学 | Subsurface wetland system capable of improving nitrogen and phosphorus removal effects of tail water in sewage plant and avoiding bioclogging |
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| CN101407360A (en) * | 2008-08-23 | 2009-04-15 | 浙江海洋学院 | Method for processing waste water of circulating marine culture by using artificial wet land |
| CN201648099U (en) * | 2010-02-01 | 2010-11-24 | 河海大学 | Novel constructed wetland packing module |
| CN104591397A (en) * | 2015-02-09 | 2015-05-06 | 上海交通大学 | Subsurface wetland system capable of improving nitrogen and phosphorus removal effects of tail water in sewage plant and avoiding bioclogging |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110776206A (en) * | 2019-11-19 | 2020-02-11 | 江苏莲洋港环保科技有限公司 | Sewage treatment station and phosphorus and nitrogen removal method adopting sewage treatment station |
| CN110776206B (en) * | 2019-11-19 | 2024-05-07 | 江苏莲洋港环保科技有限公司 | Sewage treatment station and dephosphorization and denitrification method adopting same |
| CN111345192A (en) * | 2020-03-06 | 2020-06-30 | 浙江省海洋水产养殖研究所 | Ecological cycle system is bred to sea water shrimp intensification |
| CN112279378A (en) * | 2020-10-15 | 2021-01-29 | 苏州科技大学 | Biological treatment method and device for purifying aquaculture wastewater and circulating purification aquaculture device |
| CN112279378B (en) * | 2020-10-15 | 2024-01-12 | 苏州科技大学 | Biological treatment method and device for purified cultivation wastewater and circulating purification cultivation device |
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| CN106186548B (en) | 2019-04-02 |
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